Scanner can refer to:
- The Retinal scanner - the device used by the Black Mesa personnel in the Black Mesa Research Facility in Half-Life and its expansions
- The City Scanner - the hovering surveillance device used by the Combine in Half-Life 2
- The Combot - its direct predecessor
- The Shield Scanner - the hovering support Synth used by the Combine for laying mines
- The Wasteland Scanner - the cut hovering Synth
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